add ignore attribute to CenterContainer widget

frontend/ui/widget.lua

@@ -126,9 +126,15 @@ function CenterContainer:paintTo(bb, x, y)
 		-- throw error? paint to scrap buffer and blit partially?
 		-- for now, we ignore this
 	end
-	self[1]:paintTo(bb,
-		x + (self.dimen.w - contentSize.w)/2,
-		y + (self.dimen.h - contentSize.h)/2)
+	local x_pos = x
+	local y_pos = y
+	if self.ignore ~= "height" then
+		y_pos = y + (self.dimen.h - contentSize.h)/2
+	end
+	if self.ignore ~= "width" then
+		x_pos = x + (self.dimen.w - contentSize.w)/2
+	end
+	self[1]:paintTo(bb, x_pos, y_pos)
 end
 
 --[[